Building a Micro-SaaS for $18/year. Can a solo founder beat Adobe?

Hi everyone,

I’m building a micro-SaaS PDF toolkit (Acrion). I’m trying to find the "sweet spot" between free ad-ridden tools and expensive enterprise suites.

The Strategy:

• No Ads: Clean UX is the main feature.
• Extreme Privacy: Immediate file deletion. No tracking.
• Micro-Pricing: Testing $18/year to fight "subscription fatigue."

The Question: Is $18/year too low for a sustainable Micro-SaaS, or is high volume the only way to survive in the PDF niche? I'd love to hear from other solo founders who went with "Low Price / High Privacy" models.

I don't want to spam, so if you're interested in the stack or the tool, I can share the link in the comments or you can find it in my profile.